1243628 has 12 divisors (see below), whose sum is σ = 2206680. Its totient is φ = 613152.

The previous prime is 1243609. The next prime is 1243631. The reversal of 1243628 is 8263421.

1243628 is nontrivially palindromic in base 8.

It is a super-2 number, since 2×1243628² = 3093221204768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1243597 and 1243606.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1838 + ... + 2421.

It is an arithmetic number, because the mean of its divisors is an integer number (183890).

2^1243628 is an apocalyptic number.

It is an amenable number.

1243628 is a deficient number, since it is larger than the sum of its proper divisors (963052).

1243628 is a wasteful number, since it uses less digits than its factorization.

1243628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4336 (or 4334 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 1243628 is about 1115.1807028460. The cubic root of 1243628 is about 107.5383818236.

The spelling of 1243628 in words is "one million, two hundred forty-three thousand, six hundred twenty-eight".